/* 关键词落地页共享样式：与星链VPN官网保持同一套品牌视觉（#0ea5e9 天蓝主色） */
:root {
  --kw-bg: #ffffff;
  --kw-surface: #f8fafc;
  --kw-surface-2: #f1f5f9;
  --kw-text: #1e293b;
  --kw-muted: rgba(30, 41, 59, 0.72);
  --kw-muted-2: rgba(30, 41, 59, 0.56);
  --kw-border: rgba(30, 41, 59, 0.12);
  --kw-border-2: rgba(30, 41, 59, 0.18);
  --kw-brand: #0ea5e9;
  --kw-brand-dark: #0369a1;
  --kw-glow: rgba(14, 165, 233, 0.18);
  --kw-radius: 18px;
  --kw-ring: rgba(14, 165, 233, 0.28);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--kw-bg);
  color: var(--kw-text);
  font-family:
    "Plus Jakarta Sans",
    -apple-system,
    "Segoe UI",
    "PingFang SC",
    "Microsoft YaHei",
    sans-serif;
  line-height: 1.7;
  overflow-x: hidden;
}

a {
  color: var(--kw-brand-dark);
  text-underline-offset: 3px;
}

a:hover {
  color: var(--kw-brand);
}

img {
  max-width: 100%;
  height: auto;
}

/* ---------- 布局容器 ---------- */
.kw-container {
  width: min(1080px, calc(100% - 40px));
  margin: 0 auto;
}

/* ---------- 顶部导航 ---------- */
.kw-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--kw-border);
}

.kw-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 68px;
}

.kw-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--kw-text);
  font-size: 1.06rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  text-decoration: none;
}

.kw-logo img {
  display: block;
  border-radius: 9px;
}

.kw-logo b {
  color: var(--kw-brand);
}

.kw-nav {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.92rem;
}

.kw-nav a {
  color: var(--kw-muted);
  text-decoration: none;
}

.kw-nav a:hover {
  color: var(--kw-brand-dark);
}

/* ---------- 按钮 ---------- */
.kw-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
  transition:
    transform 0.18s ease,
    box-shadow 0.18s ease,
    background 0.18s ease;
}

.kw-btn--primary {
  background: linear-gradient(135deg, var(--kw-brand), var(--kw-brand-dark));
  color: #fff;
  box-shadow: 0 10px 24px var(--kw-glow);
}

.kw-btn--primary:hover {
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 14px 30px var(--kw-glow);
}

/* 顶部导航里的主按钮（获取客户端）：提高优先级压过 .kw-nav a 的链接色，保证白字不变灰 */
.kw-nav .kw-btn--primary,
.kw-nav .kw-btn--primary:hover {
  color: #fff;
}

.kw-btn--ghost {
  border: 1px solid var(--kw-border-2);
  background: #fff;
  color: var(--kw-text);
}

.kw-btn--ghost:hover {
  color: var(--kw-brand-dark);
  border-color: var(--kw-brand);
}

/* ---------- 面包屑与页头 ---------- */
.kw-crumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 22px 0 0;
  color: var(--kw-muted-2);
  font-size: 0.85rem;
}

.kw-crumb a {
  color: var(--kw-muted-2);
  text-decoration: none;
}

.kw-crumb a:hover {
  color: var(--kw-brand-dark);
}

.kw-hero {
  padding: 26px 0 8px;
}

.kw-eyebrow {
  margin: 0 0 14px;
  color: var(--kw-brand-dark);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.16em;
}

.kw-hero h1 {
  margin: 0;
  font-size: clamp(2rem, 4.6vw, 3rem);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.01em;
}

.kw-lead {
  max-width: 760px;
  margin: 18px 0 0;
  color: var(--kw-muted);
  font-size: 1.06rem;
}

.kw-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 26px 0 0;
}

.kw-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin: 26px 0 0;
  padding: 18px 22px;
  list-style: none;
  background: var(--kw-surface);
  border: 1px solid var(--kw-border);
  border-radius: var(--kw-radius);
  font-size: 0.9rem;
  color: var(--kw-muted);
}

.kw-badges i {
  color: var(--kw-brand);
  margin-right: 6px;
}

/* ---------- 内容区块 ---------- */
.kw-section {
  padding: 44px 0 0;
}

.kw-section h2 {
  margin: 0 0 14px;
  font-size: 1.42rem;
  font-weight: 700;
  line-height: 1.3;
}

.kw-section h3 {
  margin: 26px 0 8px;
  font-size: 1.06rem;
  font-weight: 700;
}

.kw-section h4 {
  margin: 18px 0 6px;
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--kw-text);
}

.kw-section p {
  margin: 0 0 14px;
  color: var(--kw-muted);
}

.kw-section ul,
.kw-section ol {
  margin: 0 0 16px;
  padding-left: 1.3rem;
  color: var(--kw-muted);
}

.kw-section li + li {
  margin-top: 7px;
}

.kw-section strong {
  color: var(--kw-text);
}

/* ---------- 卡片网格 ---------- */
.kw-grid {
  display: grid;
  gap: 16px;
  margin: 20px 0 8px;
}

.kw-grid--2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.kw-grid--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.kw-card {
  padding: 20px 22px;
  background: var(--kw-surface);
  border: 1px solid var(--kw-border);
  border-radius: var(--kw-radius);
}

.kw-card h3 {
  margin: 0 0 8px;
  font-size: 1.02rem;
}

.kw-card p {
  margin: 0;
  font-size: 0.92rem;
}

.kw-card i {
  color: var(--kw-brand);
}

/* ---------- 表格 ---------- */
.kw-table {
  width: 100%;
  margin: 18px 0;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.kw-table th,
.kw-table td {
  padding: 13px 15px;
  border: 1px solid var(--kw-border);
  text-align: left;
  vertical-align: top;
  color: var(--kw-muted);
}

.kw-table th {
  background: var(--kw-surface-2);
  color: var(--kw-text);
  font-weight: 700;
}

.kw-table td a {
  font-weight: 600;
}

/* ---------- 提示条 ---------- */
.kw-note {
  margin: 20px 0;
  padding: 16px 20px;
  background: rgba(14, 165, 233, 0.07);
  border-left: 4px solid var(--kw-brand);
  border-radius: 12px;
  color: var(--kw-muted);
  font-size: 0.94rem;
}

.kw-note strong {
  color: var(--kw-brand-dark);
}

/* ---------- 关键词索引 ---------- */
.kw-related {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 6px;
}

.kw-related a,
.kw-related span {
  padding: 9px 16px;
  border: 1px solid var(--kw-border-2);
  border-radius: 999px;
  background: #fff;
  color: var(--kw-muted);
  font-size: 0.88rem;
  text-decoration: none;
}

.kw-related a:hover {
  color: var(--kw-brand-dark);
  border-color: var(--kw-brand);
}

.kw-related span.is-current {
  background: var(--kw-surface-2);
  color: var(--kw-muted-2);
  border-style: dashed;
}

/* ---------- IP 查询工具 ---------- */
.ip-tool {
  margin: 18px 0 8px;
  padding: 26px 28px;
  background: #fff;
  border: 1px solid var(--kw-border);
  border-radius: 20px;
  box-shadow: 0 12px 30px rgba(30, 41, 59, 0.06);
}

.ip-tool__label {
  margin: 0;
  color: var(--kw-muted-2);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.ip-tool__value {
  margin: 8px 0 0;
  color: var(--kw-text);
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: clamp(1.5rem, 4.2vw, 2.2rem);
  font-weight: 700;
  line-height: 1.3;
  word-break: break-all;
}

.ip-tool__value.is-pending {
  color: var(--kw-muted-2);
  font-size: 1.15rem;
  font-weight: 600;
}

.ip-tool__grid {
  display: grid;
  gap: 26px 32px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.ip-tool__block {
  min-width: 0;
}

.ip-tool__hint {
  margin: 12px 0 0;
  color: var(--kw-muted-2);
  font-size: 0.86rem;
}

.ip-tool__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.ip-tool__meta li {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 6px 13px;
  background: var(--kw-surface);
  border: 1px solid var(--kw-border);
  border-radius: 999px;
  font-size: 0.86rem;
  color: var(--kw-muted);
}

.ip-tool__meta b {
  color: var(--kw-text);
  font-weight: 700;
}

.ip-tool__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.ip-tool__status {
  margin: 16px 0 0;
  color: var(--kw-muted-2);
  font-size: 0.85rem;
}

.ip-tool__status.is-error {
  color: #b91c1c;
}

button.kw-btn {
  border: 0;
  cursor: pointer;
  font-family: inherit;
}

button.kw-btn[disabled] {
  cursor: progress;
  opacity: 0.6;
}

/* ---------- 常见问题 ---------- */
.kw-faq {
  display: grid;
  gap: 10px;
  margin: 18px 0 8px;
}

.kw-faq details {
  padding: 16px 20px;
  background: #fff;
  border: 1px solid var(--kw-border);
  border-radius: 14px;
}

.kw-faq summary {
  cursor: pointer;
  color: var(--kw-text);
  font-size: 0.98rem;
  font-weight: 600;
}

.kw-faq summary::marker {
  color: var(--kw-brand);
}

.kw-faq p {
  margin: 12px 0 0;
  font-size: 0.93rem;
}

/* ---------- 结尾行动区 ---------- */
.kw-cta {
  margin: 52px 0 0;
  padding: 30px 32px;
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.1), rgba(3, 105, 161, 0.08));
  border: 1px solid rgba(14, 165, 233, 0.28);
  border-radius: 22px;
}

.kw-cta h2 {
  margin: 0 0 8px;
  font-size: 1.28rem;
}

.kw-cta p {
  margin: 0 0 18px;
  color: var(--kw-muted);
}

/* ---------- 页脚 ---------- */
.kw-footer {
  margin-top: 56px;
  border-top: 1px solid var(--kw-border);
  background: var(--kw-surface);
}

.kw-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 22px;
  padding: 26px 0 32px;
  color: var(--kw-muted-2);
  font-size: 0.86rem;
}

.kw-footer__inner nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.kw-footer__inner a {
  color: var(--kw-muted);
  text-decoration: none;
}

.kw-footer__inner a:hover {
  color: var(--kw-brand-dark);
}

/* ---------- 响应式 ---------- */
@media (max-width: 860px) {
  .kw-grid--3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .ip-tool__grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .kw-container {
    width: min(100% - 28px, 1080px);
  }

  .kw-header__inner {
    min-height: 62px;
  }

  .kw-nav {
    gap: 14px;
    font-size: 0.86rem;
  }

  .kw-nav a:not(.kw-btn) {
    display: none;
  }

  .kw-grid--2,
  .kw-grid--3 {
    grid-template-columns: 1fr;
  }

  .kw-table {
    display: block;
    overflow-x: auto;
  }

  .kw-cta {
    padding: 24px 20px;
  }
}